Health
Gut Microbiome Testing: What It Can and Cannot Tell You Today
Mail-in stool tests promise personalized nutrition insight, but the same sample sent to different labs can come back with conflicting advice.
Oct 3, 2025
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Health
Zone 2 Cardio Versus VO2 Max: Sorting the Training Trend From the Evidence
VO2 max strongly predicts longevity, but the evidence that slow, low-intensity Zone 2 training is the best way to raise it is weaker than the trend suggests.
Jan 15, 2025
Health
Creatine: The Most-Studied Supplement and What It Actually Does
Decades of trials back creatine for muscle and strength, and newer research is testing brain benefits, but the hype has outrun some of the data.
Aug 19, 2024
Health
The Immune System Appears to Remember Obesity for Years After the Weight Has Gone
Work in EMBO Reports finds obesity leaves a chemical mark on CD4 T cells that outlasts weight loss. The authors suggest the immune system may need years of sustained maintenance to reset, and say plainly that no long term human study confirms it.
Sep 1, 2026
Health
Vitamin D Supplements: A Reality Check on Who Actually Benefits
Large trials with more than 30,000 participants found vitamin D pills do little for people who are not deficient, reshaping decades of assumptions.
Jan 20, 2026
Health
The WHO Has Put Fungal Infections on the Danger List
New guidance targets a threat the agency calls one of the most neglected in global health. The problem is not just the infections, it is how few drugs exist to treat them.
Aug 4, 2026
Health
Retatrutide's Third Receptor Is the Hormone That Raises Blood Sugar. Adding It On Purpose Is the Whole Idea
Semaglutide hits one receptor and tirzepatide hits two. The third one retatrutide adds is glucagon, which does the opposite of what a diabetes drug is supposed to do. It is also where the liver results and the safety questions both come from.
Aug 20, 2026
Health
Ebola Travel Guidance Returns to the Departure Checklist
Updated traveler attention around Ebola-affected areas underscores a basic rule: monitor official advice, know the symptoms and seek help without stigmatizing whole countries.
Jul 24, 2026
